so, when I am meeting the GFs parents what should I wear,
I have tuth, is, Alpha
Pretty obvious 
IShine and optionally A314. Might be good so they see you are a guy who they can trust.
DO NOT wear TUTH to meet your GF’s parents!!!
Are you crazy?!?
What else do you own?
Do 3xTUTH and talk only to her mother. Ignore completely her father and you will success ;-p.
Jokes apart!!! use IS and one drop A314. I would also recomand P74.
Why P74? What can you tell us about it?
It is a bonding molecule. Helps them build trust in you as they have known you for years.
IS/A314 would be my choice out of those three but don’t go too high on the A314 or you could seem remote/standoffish/daunting to them.